FABRIC: Made from our proprietary fabric line Pacifica fabrics are Solution Dyed Canvas grade fabric made from Polyester fibers with built in UV protection offering a 4-year color fast fade . CONSTRUCTION: All aluminum frame with 1/2 inch round contract Grade fiberglass ribs Weather Protection: Featuring Commercial Grade Fiberglass ribs, single wind vent and sewn in fabric ties offering superior protection in windy conditions. OPERATION: Easy Push Open Pin Stop Optional base is not included and must be purchased Separately